Silvershield is resistant to over 280 different chemicals including alchohols, aliphatics, aromatice, chlorines, ketones, and esters. Impervious to at least 90 percent of all organic chemicals for four hours at 35°c (95°f) Sleeves are 20 in long, 2.7 MIL thickness, elastic cuff at both ends Excellent for Cleanroom. Suitable for up to class 100 cleanroom 100% powder free: reducing the particulate contaminiation: cleanroom packaged. Testing IEST-RP-CC005.3 (modified) particulate and extractables: ASTM 739 permeation. Laminating a high-energy polymer (evoh) with a low-energy polymer (PE) creates a fabric impervious to at least 90 percent of all organic chemicals for four hours at 35°c (95°f) Silver Shield is resistant to over 280 different chemicals including alchohols, aliphatics, aromatice, chlorines, ketones, and esters. Sleeves are 20 inches long and 2.7 mil thick with a heavy duty elastic cuff at both ends. Sleeves feature a five-layer fabric compacted into 2.7mil. Laminating a high-energy polymer (evoh) with a low-energy polymer (PE) creates a fabric impervious to at least 90 percent of all organic chemicals for four hours at 35°c (95°f). Each layer acts as a barrier against various epoxies and industrial chemicals. Can be used with Silver shield/4H gloves and/or apron. Sleeves provide added protection for the upper arms and shoulders. Elastic bands at the shoulder and wrist ensure a snug fit.